Memory Coherence

March 6, 2026 · View on GitHub

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You are in a sub-page of MemoryLongContext.
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Think of this page as a desk within a ward.
If you need the full triage and all prescriptions, return to the Emergency Room lobby.

Keep multi-turn and multi-session dialogs stable by fencing memory state.
This page shows how to prevent forks, desync, and ghost buffers when conversations span long contexts or multiple agents.


When to use this page

  • Long support chats (~days) forget earlier task context.
  • Model switches or tab refreshes flip prior facts.
  • Two agents on the same ticket give inconsistent answers.
  • OCR transcripts look fine but later steps rewrite history.
  • Persona or role change contaminates state with old context.

Core acceptance targets

  • Each turn stamped with mem_rev and mem_hash.
  • No forks across sessions for the same task_id.
  • ΔS(question, retrieved) ≤ 0.45 with joins ≤ 0.50.
  • λ remains convergent across three paraphrases.
  • All claims cite snippet_id, no orphans.

Structural fixes

  • Stamp and fence
    Require mem_rev, mem_hash, and task_id at every turn.
    Forbid writes if stamps mismatch.

  • Shard state
    Partition prompts as {system | task | constraints | snippets | answer}.
    Forbid snippet reuse across sections.

  • Normalize consistently
    Enforce Unicode NFC, strip zero width marks, unify full/half width.
    Block OCR lines below confidence threshold.

  • Recover forks
    If two agents diverge, reconcile by ΔS triangulation and pick the lower-entropy path.

  • Bridge collapse
    Apply BBCR if attention melt or desync detected mid-chain.


Fix in 60 seconds

  1. At turn start, echo {mem_rev, mem_hash, task_id}.
  2. If stamps mismatch, reject write and request sync.
  3. Split snippets by section, forbid cross-reuse.
  4. Normalize all inputs.
  5. Apply BBAM/BBCR if λ drifts or collapse appears.
  6. Verify ΔS(question, retrieved) ≤ 0.45 and joins ≤ 0.50.

Copy-paste prompt


You have TXT OS and the WFGY Problem Map.

Goal: Keep memory coherent across multi-session dialogs.

Protocol:

1. Print {mem\_rev, mem\_hash, task\_id}.
2. Assemble prompt as {system | task | constraints | snippets | answer}.
3. Enforce guardrails:

   * cite then answer
   * forbid cross-section reuse
   * reject orphan claims without snippet\_id
4. If λ flips, apply BBAM. If collapse, insert BBCR bridge.
5. Report ΔS(question, retrieved), ΔS across joins, λ states, and final answer.


Common failure patterns

  • State fork: two parallel tabs rewrite history differently.
  • Ghost buffer: old role text leaks into new session.
  • Desync: memory IDs mismatch after refresh.
  • OCR drift: spacing or casing breaks snippet alignment.

🔗 Quick-Start Downloads (60 sec)

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